If you are experiencing replication problems between your domain controllers, then there is a quick and dirty way to force the NDTS topology updates. Usually I encounter those problems when I move DC’s between different locations in my test environment.
Start “Active Directory Sites and Services” console, locate the site and domain controller, open NTDS settings and remove all connection links.
Start “Command Prompt” and execute repadmin /kcc (Forces the KCC to recalculate replication topology for a specified domain controller. By default this recalculation occurs every 15 minutes.)
Wait for a while and check the replication between your domain controllers.